A milling tool positioning jig for aluminium

Abstract

The utility model discloses a kind of milling cutter positioning frame for aluminium, including mounting seat, the lower end of mounting seat is provided with milling cutter, the fixed mechanism for fixing milling cutter is provided between milling cutter and mounting seat, the fixed mechanism includes chuck, threaded sleeve, connecting ring, extrusion ring, tool shank, slot, bolt, the lower end outside surface of mounting seat is provided with chuck, the outside surface of mounting seat is provided with threaded sleeve by screwing, the lower end of threaded sleeve is fixed with connecting ring. The utility model applies synchronous with bolt lock dead to friction lock dead, the relative position accuracy between milling cutter and workpiece can be guaranteed by elastic friction clamping force, the elastic deformation clamping of elastic element can compensate the machining error of mechanical lock dead, and mechanical bolt lock dead ensures that milling cutter will not produce the possibility of tool breakage in processing process, so it can significantly improve the milling cutter positioning and fixing effect of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of milling cutter positioning brackets, specifically a milling cutter positioning bracket for aluminum. Background Technology

[0002] A milling cutter positioning holder is a specialized device used in milling operations for precise positioning and secure clamping of milling cutters. Its core function is to ensure that the milling cutter maintains a precise relative position with the workpiece during machining, thereby improving machining accuracy, efficiency, and safety.

[0003] In existing technologies, this type of milling cutter positioning holder typically clamps the milling cutter by threading a collet or chuck, and the elastic deformation of the collet or chuck clamps the cutter. This method is suitable for milling cutters of various diameters. It is simple to operate and easy to use. Specifically, it can be described as follows: Figure 7 As shown, this fixing method also has drawbacks. The entire fixing process is tightened by friction, which is not a locking fix. Without a locking structure, relying solely on friction still poses a risk of tool slippage. Therefore, an improved aluminum milling cutter positioning bracket is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning holder for milling cutters used in aluminum, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a milling cutter positioning bracket for aluminum, comprising a mounting base, a milling cutter disposed at the lower end of the mounting base, and a fixing mechanism for fixing the milling cutter disposed between the milling cutter and the mounting base, the fixing mechanism comprising a collet, a threaded sleeve, a connecting ring, a compression ring, a tool holder, a slot, and a pin; a collet is disposed on the outer surface of the lower end of the mounting base, a threaded sleeve is disposed on the outer surface of the mounting base by threaded engagement, a connecting ring is fixedly disposed at the lower end of the threaded sleeve, a compression ring is fixedly disposed at the lower end of the connecting ring, a tool holder is disposed at the upper end of the milling cutter, a slot is opened on the outer surface of the tool holder, and pins are movably inserted and inserted around the inside of the mounting base.

[0006] Preferably, the inner sidewall of the connecting ring has an annular groove, so as to... Figure 3 From the perspective shown, as the connecting ring and the annular groove move upwards, the inclined chamfer on the outer surface of the annular groove allows the threaded sleeve to be rotated via the threaded mechanism. As the threaded sleeve and connecting ring move upwards, the groove presses against the arc-shaped protrusion of the pin, pushing the pin towards the tool holder. Ultimately, this allows the pin to be inserted into the slot, forming... Figure 2As shown, this completes the friction clamping and locking of the milling cutter, as well as the mechanical pin locking. This ensures that the milling cutter will not wobble and guarantees machining accuracy, while also preventing the milling cutter from dislodging during machining. This significantly improves the milling cutter positioning and fixing effect of this device.

[0007] Preferably, a slot is provided in the middle of the inner side of the mounting base. When the shank of the milling cutter is inserted into the slot, the power transmission connection between the mounting base and the milling cutter can be completed, so that the shank can be rotated together when the mounting base rotates.

[0008] Preferably, both ends of the pin are provided with arc-shaped protrusions, and the pin is frustum-shaped. This arc-shaped protrusion eliminates the need for a spring-driven pin reset structure, reducing the overall number of parts in the device. When the milling cutter needs to be removed, the chamfer inside the slot also provides a chamfer, which compresses the arc-shaped protrusion to make the pin automatically move away from the slot and be squeezed out, thus facilitating the removal of the milling cutter. The chamfer on the corresponding groove surface can also compress the pin to make it re-insert into the slot on the milling cutter surface. Furthermore, the frustum-shaped pin can limit the depth of the pin insertion into the slot, ensuring that only the arc-shaped protrusion of the pin can be inserted into the slot, thereby simplifying the limiting structure of the device and further reducing the overall number of parts in the device.

[0009] Preferably, the chuck is made of an elastic metal material. When the chuck is squeezed by the compression ring, it can tighten itself together, and the relative positional accuracy between the milling cutter and the workpiece can be ensured by the frictional clamping force.

[0010] Preferably, four pins are provided, evenly spaced inside the mounting base. The pins are inserted into the slots of the tool holder, thus using mechanical locking to ensure that the milling cutter will not dislodge during machining.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model applies friction locking and pin locking simultaneously. The elastic friction clamping force can ensure the relative positional accuracy between the milling cutter and the workpiece. The elastic deformation clamping of the elastic element can compensate for the machining error of mechanical locking. The mechanical pin locking ensures that the milling cutter will not be dislodged during the machining process. This can significantly improve the milling cutter positioning and fixing effect of this device.

[0013] 2. Although this utility model adds a mechanical pin locking structure, the overall structure is not complex. The use of a frustum-shaped pin with arc-shaped protrusions at both ends eliminates the need for the limiting and resetting structures required by traditional pins, significantly reducing the number of parts in the device. Furthermore, the limiting and fixing steps for the milling cutter are consistent with existing technology: simply insert the cutter holder into the mounting base and tighten the threaded sleeve; no additional operations are required. The entire installation process is convenient and efficient, facilitating widespread application. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a milling cutter positioning frame for aluminum according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a milling cutter positioning bracket for aluminum according to the present invention. Figure 1 ;

[0016] Figure 3 This is a cross-sectional view of a milling cutter positioning bracket for aluminum according to the present invention. Figure 2 ;

[0017] Figure 4 This is a cross-sectional view of a milling cutter positioning bracket for aluminum according to the present invention. Figure 3 ;

[0018] Figure 5 This utility model relates to a positioning bracket for milling cutters used in aluminum production. Figure 3 Enlarged view of point A in the middle;

[0019] Figure 6 This is an overall structural view of the pin in the positioning bracket for an aluminum milling cutter according to this utility model;

[0020] Figure 7 This is an overall structural view of the existing milling cutter fixing structure.

[0021] In the diagram: 1. Mounting base; 2. Milling cutter; 3. Chuck; 4. Threaded sleeve; 5. Connecting ring; 6. Extrusion ring; 7. Tool holder; 8. Slot; 9. Pin; 10. Groove; 11. Slot; 12. Arc-shaped protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-7This utility model provides a technical solution: a milling cutter positioning bracket for aluminum, including a mounting base 1, a milling cutter 2 is provided at the lower end of the mounting base 1, and a fixing mechanism for fixing the milling cutter 2 is provided between the milling cutter 2 and the mounting base 1. The fixing mechanism includes a collet 3, a threaded sleeve 4, a connecting ring 5, a compression ring 6, a tool holder 7, a slot 8, and a pin 9. The collet 3 is provided on the outer surface of the lower end of the mounting base 1, and the threaded sleeve 4 is provided on the outer surface of the mounting base 1 by threaded engagement. The connecting ring 5 is fixedly provided at the lower end of the threaded sleeve 4, and the compression ring 6 is fixedly provided at the lower end of the connecting ring 5. The tool holder 7 is provided at the upper end of the milling cutter 2, and the slot 8 is opened on the outer surface of the tool holder 7. The pins 9 are movably inserted around the inside of the mounting base 1.

[0024] The inner sidewall of the connecting ring 5 has an annular groove 10, so as to... Figure 3 From the perspective shown, when the connecting ring 5 and the annular groove 10 move upward, the outer surface of the annular groove 10 has an inclined chamfer. This allows the threaded sleeve 4 to be rotated by the thread, causing the threaded sleeve 4 and the connecting ring 5 to move upward. The groove 10 then presses against the arc-shaped protrusion 12 of the pin 9, pushing the pin 9 towards the tool holder 7. Ultimately, the pin 9 can be inserted into the slot 8 to form... Figure 2 As shown, the friction clamping and locking of the milling cutter 2 and the mechanical pin 9 can be completed. This ensures that the milling cutter 2 will not wobble and that the machining accuracy is guaranteed. It also ensures that the milling cutter 2 will not be dislodged during the machining process. This can significantly improve the positioning and fixing effect of the milling cutter 2 in this device.

[0025] The mounting base 1 has a slot 11 in the middle of its inner side. When the shank 7 of the milling cutter 2 is inserted into the slot 11, the power transmission connection between the mounting base 1 and the milling cutter 2 can be completed, so that the shank 7 can be driven to rotate together when the mounting base 1 rotates.

[0026] Both ends of the pin 9 are provided with arc-shaped protrusions 12. The pin 9 is frustum-shaped. The arc-shaped protrusions 12 can eliminate the need for a spring to drive the pin 9 to return to its original position, thus reducing the number of parts in the device. When the milling cutter 2 needs to be removed, since the slot 8 also has a chamfer inside, the chamfer can be used to squeeze the arc-shaped protrusions 12, causing the pin 9 to automatically move away from the slot 8 and be squeezed out of the slot 8, thus facilitating the removal of the milling cutter 2. The chamfer on the surface of the groove 10 can also squeeze the pin 9, allowing the pin 9 to be reinserted into the slot 8 on the surface of the milling cutter 2. The frustum-shaped pin 9 can limit the depth of the pin 9 inserted into the slot 11, ensuring that only the part of the pin 9 with the arc-shaped protrusions 12 can be inserted into the slot 11. This can reduce the limiting structure of the device and further reduce the number of parts in the device.

[0027] The chuck 3 is made of elastic metal material. When the chuck 3 is squeezed by the extrusion ring 6, the elastic metal material can tighten itself together. The frictional clamping force can ensure the relative positional accuracy between the milling cutter 2 and the workpiece.

[0028] The pins 9 are provided in four evenly spaced positions inside the mounting base 1. The pins 9 are inserted into the slots 8 of the tool holder 7, thus using mechanical locking to ensure that the milling cutter 2 will not dislodge during the machining process.

[0029] Working principle: When using this device to install the milling cutter 2 and the mounting base 1, the steps shown in Figures 4, 3, and 2 can be followed. The specific installation process is as follows:

[0030] First, insert the milling cutter 2 with its shank 7 aligned with the center of the mounting base 1, so that the shank 7 is inserted into the internal slot 11. Viewed from the perspective shown in Figure 4, when the shank 7 is inserted, it first presses against the arc-shaped protrusion 12 of the pin 9, causing the pin 9 to retract into the mounting base 1. Next, rotate the threaded sleeve 4, moving it upwards (as shown in Figure 3). Because the outer surface of the annular groove 10 on the threaded sleeve 4 has an inclined chamfer, as the thread rotates, causing the threaded sleeve 4 and connecting ring 5 to move upwards, the annular groove 10 presses against the arc-shaped protrusion 12 of the pin 9, pushing the pin 9 towards the shank 7 until the pin 9 is inserted into the slot 8 of the shank 7, forming the state shown in Figure 2. At this time, the compression ring 6 compresses the elastic collet 3, tightening it, thereby achieving frictional clamping and locking of the milling cutter 2.

[0031] From the perspective of Figure 2, the annular groove 10 and the pin 9 are horizontally misaligned, and the arc-shaped protrusion 12 is in close contact with the inner sidewall of the connecting ring 5. At this time, no matter how much downward pulling force is applied, the pin 9 cannot disengage from the slot 8 because it has no space to move left or right, thus achieving mechanical locking of the pin 9. This design not only ensures that the milling cutter 2 is installed stably and without shaking, ensuring machining accuracy, but also eliminates the possibility of the cutter dislodging during machining, significantly improving the positioning and fixing effect of the milling cutter 2 in this device.

[0032] Although this device adds a mechanical locking pin 9, the overall structure is not complex. The use of a frustum-shaped pin 9, along with arc-shaped protrusions 12 at both ends, eliminates the need for the limiting and resetting structures required by traditional pins 9, significantly reducing the number of parts in the device. Furthermore, the limiting and fixing steps for the milling cutter 2 are consistent with existing technology: simply insert the tool holder 7 into the mounting base 1 and tighten the threaded sleeve 4; no additional operations are required. The entire installation process is convenient and efficient, facilitating widespread application.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A milling cutter positioning bracket for aluminum, comprising a mounting base (1), characterized in that: The lower end of the mounting base (1) is provided with a milling cutter (2). A fixing mechanism for fixing the milling cutter (2) is provided between the milling cutter (2) and the mounting base (1). The fixing mechanism includes a collet (3), a threaded sleeve (4), a connecting ring (5), a compression ring (6), a tool holder (7), a slot (8), and a pin (9). The lower outer surface of the mounting base (1) is provided with a collet (3). The outer surface of the mounting base (1) is provided with a threaded sleeve (4) by threaded engagement. The lower end of the threaded sleeve (4) is fixedly provided with a connecting ring (5). The lower end of the connecting ring (5) is fixedly provided with a compression ring (6). The upper end of the milling cutter (2) is provided with a tool holder (7). The outer surface of the tool holder (7) is provided with a slot (8). The mounting base (1) is provided with pins (9) that are movably inserted around its interior.

2. The milling cutter positioning bracket for aluminum according to claim 1, characterized in that: The inner sidewall of the connecting ring (5) is provided with an annular groove (10).

3. The milling cutter positioning holder for aluminum according to claim 1, characterized in that: A slot (11) is provided in the middle of the inner side of the mounting base (1).

4. The milling cutter positioning bracket for aluminum according to claim 1, characterized in that: Both ends of the pin (9) are provided with arc-shaped protrusions (12), and the pin (9) is frustum-shaped.

5. The milling cutter positioning bracket for aluminum according to claim 1, characterized in that: The clamp (3) is made of elastic metal material.

6. The milling cutter positioning holder for aluminum according to claim 1, characterized in that: The pins (9) are provided in four parts, and are evenly spaced inside the mounting base (1).

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